EP 4277073 A4 20240403 - CONTROL METHOD AND DISTRIBUTED ELECTRIC POWER SYSTEM
Title (en)
CONTROL METHOD AND DISTRIBUTED ELECTRIC POWER SYSTEM
Title (de)
STEUERUNGSVERFAHREN UND VERTEILTES STROMSYSTEM
Title (fr)
PROCÉDÉ DE COMMANDE ET SYSTÈME D'ÉNERGIE ÉLECTRIQUE DISTRIBUÉE
Publication
Application
Priority
CN 2021075241 W 20210204
Abstract (en)
[origin: WO2022165701A1] The embodiments of the present application relate to the technical field of control. Provided are a control method and a distributed electric power system. The distributed electric power system comprises a plurality of distributed power supply units, wherein the plurality of distributed power supply units are all connected to an alternating-current power grid. The method comprises: controlling an inverter to work in a current source mode, wherein the current source mode is the inverter serving as a current source to convert a direct current generated by a power source device into an alternating current and output same to an alternating-current power grid; and when it is detected that the voltage of a first target port jumps, controlling the inverter to switch from the current source mode to a voltage source mode. Therefore, an output voltage of an inverter can be controlled within a safe range, and thus, before a reason for a voltage abnormality is detected, a local load can be protected, and the local load can be provided with a relatively continuous power supply.
IPC 8 full level
H02J 3/38 (2006.01)
CPC (source: EP US)
H02J 3/388 (2020.01 - EP US); H02M 1/32 (2013.01 - US); H02M 1/36 (2013.01 - US); H02M 7/44 (2013.01 - US); H02J 3/381 (2013.01 - EP)
Citation (search report)
- [XA] US 2003080741 A1 20030501 - LEROW KEVIN E [US], et al
- [A] US 2017229868 A1 20170810 - LAVAL STUART [US], et al
- [A] CN 111384727 A 20200707 - SUNGROW POWER SUPPLY CO LTD
- [A] CN 110556861 A 20191210 - ZHEJIANG SOLAX POWER NETWORK ENERGY TECH CO LTD
- [A] LIU ZENG ET AL: "A Unified Control Strategy for Three-Phase Inverter in Distributed Generation", IEEE TRANSACTIONS ON POWER ELECTRONICS, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, USA, vol. 29, no. 3, 1 March 2014 (2014-03-01), pages 1176 - 1191, XP011527243, ISSN: 0885-8993, [retrieved on 20130918], DOI: 10.1109/TPEL.2013.2262078
- See also references of WO 2022165701A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4277073 A1 20231115; EP 4277073 A4 20240403; CN 115917912 A 20230404; CN 115917912 A8 20240510; US 2023378764 A1 20231123; WO 2022165701 A1 20220811
DOCDB simple family (application)
EP 21923726 A 20210204; CN 2021075241 W 20210204; CN 202180052305 A 20210204; US 202318229289 A 20230802